Comparison

SwiftRPN vs Calculator T

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SwiftRPN

This utility app provides a powerful Reverse Polish Notation (RPN) calculator with advanced features. It supports scalar types, vectors, and matrices, along with extensive built-in operators and unit conversions. Easily switch between number bases and visualize results.

Highlights
  • RPN stack for efficient calculations
  • Support for scalar, vector, and matrix types
  • 84 built-in operators with documentation
  • 74 built-in units for conversion
  • Multiple number base input and output (binary, octal, decimal, hex)
  • BigInt support for integer calculations
Read full description

SwiftRPN is an RPN (Reverse Polish Notation) calculator that aims to be quick to open and easy to use. = RPN Stack Work quickly and efficiently using the RPN Stack by pushing and popping values. The stack will always show what series of inputs led to each output, so you won't lose context during complicated expressions. = Extended Types SwiftRPN can understand scalar types like integers and real numbers, as well as vectors and square matrices of sizes 2, 3, and 4. When operating purely in the scalar integer domain, SwiftRPN can promote up to BigInts to avoid floating point imprecision. = Operators SwiftRPN has 84 built-in operators with included documentation and examples. All the expected operators (basic arithmetic, exponents, logarithms) are present, as are: - Rounding functions (floor/ceil/trunc/round) - Unit conversions - Bitwise operations (and/or/not/xor/shift left/shift right) - Statistics (avg/min/max/sum/std dev/NPV) - Trigonometry (sin/cos/tan + arc/hyperbolic variants) - Vector operations (dot/cross/normalize/length/swizzle) - Matrix operations (identity/inverse/transpose + translation/scale/rotation matrix generators) = Unit Conversions SwiftRPN has 74 built-in units, and can convert between units within families, including: - Angle - Area - Colors (3 and 4 components) - Coordinate systems (2D and 3D) - Length - Mass - Storage (Base 10 [SI, 1000 bytes in a kb] and Base 2 [1024 bytes in a kb]) - Temperature - Time - Volume = Value Representation SwiftRPN recognizes values represented in binary, octal, decimal, and hexidecimal. You can: - Enter values in one representation, and convert them to another - See the result of bitwise operations in binary automatically - View vec3 and vec4 components (truncated) in hexidecimal when working with colors.

About

Calculator T

This app offers advanced scientific calculation and unit conversion capabilities. It features a history tape, memory functions, and supports complex mathematical operations. It also includes currency exchange rates and a wide range of measurement conversions.

Highlights
  • Standard and scientific function modes
  • Extensive unit conversion (over 300 units)
  • History tape for last 100 records
  • Memory buttons (MS, M+, M-, MR, MC)
  • Copy/paste functionality for equations and results
  • Support for large number calculations and scientific notation
  • Currency exchange rate conversion
Features
Read full description

● Functional Features: 1. Supports standard and scientific function modes. 2. Supports many unit conversion. 3. Displays both the equation & the result. 4. History Tape View - the most recent 100 historical records are automatically saved on your device, you can get them when you open the APP next time. 5. Supports 5 memory buttons and multiple memory records: MS (M Save), M+, M-, MR (M Recall) and MC (Clear Memory), If you often use Windows calculators, then you should be familiar with them. ^_^ 6. Supports copying for both current input and historical records by tap & hold on it - you can copy the equation/expression or the result to the clipboard. 7. Supports pasting equation/expression into input box with robust expression parsing capabilities from the clipboard. 8. Supports long equation/expression input - maximum 1500 characters. 9. Supports insert the equation or result of the historical record into the input box by tap & hold on it. 10. Optimized the layout for iPad, designed with elegant, easy and intuitive interface. 11. Turn on the F-E button to force convert the result to E-notation (scientific notation). 12. When you press the equals button, the APP will automatically fill in any unclosed parentheses in the equation. 13. Supports Equals Repeat function - the APP will automatically repeat it if the last calculation is simple arithmetic operations (+, -, ×, ÷). 14. No ads. ● Math & ALGEBRA Features: 1. Supports 32-bit input precision & calculation precision, this means you can enter 32-bit integer or 32 decimal places. 2. Supports input of maximum scientific notation exponent "9999", eg. 999999E9999. 3. Supports big integer & rational number: For the factorial calculation of positive integer, up to 10000! (about 2.846E+35659). For the calculation result, maximum support 9.999E+99999999. 4. Support constants π, e. 5. Supports switching three angle units (RAD, DEG, GRAD), instead of applying it to the entire equation, we identify the unit of angle for each trigonometric function, so you get a clearer understanding of what the equation means. 6. Supports advanced calculations, including n!, ^, mod, √, log, ln, cube, square, cube root, y root, abs, ceil, random, floor and exponential functions etc. 7. Supports trigonometric functions (sin, cos, tan, asin, acos, atan) and hyperbolic functions (sinh, cosh, tanh, asinh, acosh, atanh). ● Unit Converter Features: 1. Supports multiple weight and measurement unit conversions - Volume, Length, Weight & Mass, Time, Energy, Area, Speed, Temperature, Power, Data, Pressure and Angle. 2. Supports currency exchange rate conversion (over 160 different currency units, and exchange rate data are hourly updated). 3. Supports 300+ Units. 4. Supports favorites function for quick conversions - allows setting 4 frequently used units for each conversion category. 5. We take the accuracy of conversion very seriously, and therefore, We had carefully verified the conversion values of each unit. Such as: when it comes to the electron-volt, many converters use different values, such as 1 eV = 1.60217656535E-19 J, 1 eV = 1.602176473E-19 J, and so on. However, we found that the CODATA 2018 recommended value (latest version) is 1 eV = 1.602176634E-19 J, so we use this latest recommended value. ● Multiple Languages: 1. English 2. Japanese 3. Chinese If you’re using an iPad or iPhone, you can enjoy the Calculator T application, hope it can assist you with your studies and work. If you find it useful, please consider supporting us by leaving a positive review and sharing your suggestions. Thanks :)

Screenshots

SwiftRPN4 screens
Calculator T4 screens

Verdict

The call

The clearest difference is update cadence: Calculator T at every 2 days against SwiftRPN's every 14 months. Calculator T also leads on iOS requirement (11.0 vs 17.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SwiftRPN ships an update every 14 months, Calculator T every 2 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
SwiftRPN versus Calculator T: the parameters behind the verdict, then further details
ParameterSwiftRPNCalculator T
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 14 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.611.0 — better
Further details — not scored
Size3 MB16 MB
Age rating4+4+
DeveloperPatrick GelvinXiao Hou Yi Sheng Traditional Chinese Medicine Technology (Shenzhen) Co., Ltd

Customer experience

SwiftRPN

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Calculator T

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SwiftRPN

No in-app purchases

None

Calculator T

No in-app purchases

Questions

Is SwiftRPN free?
SwiftRPN is free to download, with no in-app purchases.
Is Calculator T free?
Calculator T is free to download, with no in-app purchases.
Do SwiftRPN or Calculator T have ads?
Neither SwiftRPN nor Calculator T shows ads.
Which is updated more often, SwiftRPN or Calculator T?
SwiftRPN ships an update every 14 months, and Calculator T every 2 days. Most recently, SwiftRPN was updated on November 3, 2026 and Calculator T on November 4, 2026.

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